In article , Huge
scribeth thus
On 2013-07-27, The Medway Handyman wrote:

An awning is attached to a wall at a height "X".


The front edge is lower because the awning slopes by 15 degrees.


Depending on the width, the awning could extend by anything from 1m to 4m.

If I want the front edge at a specific height "Y", what would distance
"X" be?

I want to make up a spreadsheet to calculate this for any height "Y" and
any extension. So, if the client wants the front of the awning 2.1m off
the ground and it extends 2m, how high would "X" be?

Everything you need to know is in this article;

http://en.wikipedia.org/wiki/Right_Angle_Triangle



Yes fine but often it seems that Wikipedia goes into some complex maths
rather too soon in the explain process. I 'm sure 'tho I can't remember
it there is a very good site around that has a few worked out examples
and shows you how those are done thats rather more educative than this
one...

--
Tony Sayer